Weight calibration device for large-mass comparator

Abstract

The invention discloses a weight calibration device for a large-mass comparator and relates to the field of measurement. The weight calibration device for the large-mass comparator comprises a base, wherein a weighing tray for weighing weights is arranged on the base, a supporting structure, wherein the supporting structure is arranged on the weighing tray and a supporting gap is arranged on the supporting structure and the width of the supporting gap is smaller than the diameter of the weight, a loading frame, wherein the loading frame is detachably connected to the base and the loading framecomprises a loading table for supporting the weight. When the loading frame is arranged on the base, the loading table is arranged in the supporting gap, and the distance between one side of the loading table which is far away from the base and the base is smaller than the distance between one side of the supporting structure which is far away from the base and the base. According to the weight calibration device for the large-mass comparator, the influence of the loading frame on the calibration process is reduced, namely, the possibility of absolute error generation is reduced, and the accuracy and stability of the comparator weight calibration are improved.

Description

technical field [0001] The invention relates to the field of measurement, in particular to a weight calibrating device for a large-mass comparator. Background technique [0002] The mass comparator is an electronic measuring device based on the principle of measuring the deformation and strain of elastic elements, or the principle of electromagnetic force feedback balance. Its main purpose is to measure the mass difference based on the ABA or ABBA cycle method, and it is used for high-resolution electronic measuring equipment for weight transfer or other special purposes for testing. [0003] At present, the eccentric load error is an urgent problem to be solved in the field of metrology. The eccentric load error refers to the error caused by the center of gravity of the weight deviating from the center of the weighing pan of the mass comparator. The weights are verified, calibrated, and transferred through the comparator. Since the largest single weight of the existing hig...

AI Technical Summary

Problems solved by technology

The weights are verified, calibrated, and transferred through the comparator. Since the largest single weight of the existing high-grade weights (E2 grade) can only be traced to 50kg, large weights of 100kg and above (F1 grade and below The calibration can only be carried out with a combination of multiple 50kg weights. However, when the user places the weights on the weighing pan, it is difficult for the center of the weights to be at the same position as the center of the weighing pan. As a result, the eccentric load error is caused, which reduces the accuracy and stability of the comparator weight calibration

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